118 citations · 443 across the 8 of their papers we have counts for
6 papers
Gaussian approximations for the exchange-energy functional of current-carrying states: Applications to two-dimensional systems
S. Pittalis, E. Rasanen, E. K. U. Gross
Electronic structure calculations are routinely carried out within the framework of density-functional theory, often with great success. For electrons in reduced dimensions, howeve…
Lower Bounds on the Exchange-Correlation Energy in Reduced Dimensions
E. Rasanen, S. Pittalis, K. Capelle +1
Bounds on the exchange-correlation energy of many-electron systems are derived and tested. By using universal scaling properties of the electron-electron interaction, we obtain the…
Electronic exchange in quantum rings
E. Rasanen, S. Pittalis, C. R. Proetto +1
Quantum rings can be characterized by a specific radius and ring width. For this rich class of physical systems, an accurate approximation for the exchange-hole potential and thus…
Optimal Control of Quantum Rings by Terahertz Laser Pulses
E. Rasanen, A. Castro, J. Werschnik +2
Complete control of single-electron states in a two-dimensional semiconductor quantum-ring model is established, opening a path into coherent laser-driven single-gate qubits. The c…
Half-Integer Filling Factor States in Quantum Dots
A. Harju, H. Saarikoski, E. Rasanen
Emergence of half-integer filling factor states, such as nu=5/2 and 7/2, is found in quantum dots by using numerical many-electron methods. These states have interesting similariti…
Three real-space discretization techniques in electronic structure calculations
T. Torsti, T. Eirola, J. Enkovaara +13
A characteristic feature of the state-of-the-art of real-space methods in electronic structure calculations is the diversity of the techniques used in the discretization of the rel…